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I installed the latest Linux kernel (3.4.3). After rebooting, it says I am in Ubuntu 2D. How do I either go back to my previous kernel, or fix this problem? Thanks.

$ uname -r
3.4.3-030403-generic
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1 Answer 1

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This kernel apparently lacks drivers needed for Unity support, as it's a mainline kernel without Ubuntu added code and drivers.

To go back to your old kernel:

  • Reboot and right after your system finishes the self-test (POST) routine, press the left shift key and keep it pressed until you get to the GRUB menu.
  • Select "Previous Linux versions" and boot with a 3.2-series kernel
  • If you want to remove the non-working kernel, open a terminal and type

    sudo apt-get remove linux-image-generic=3.4.3

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